中国药典1985年版(下称药典)按法定计量单位制的要求,将过去的浓度单位“当量及其符号N,克分子浓度及其符号M”废除,代之以摩尔/升表示。由于当量浓度与摩尔浓度不一定相等及长期使用旧单位制的习惯,加之滴定度又以每ml某滴定液(Xmol/L)相当于多少克被测物表示,因此,给药物分析计算带来了 Chinese Pharmacopoeia 1985 edition (hereinafter referred to Pharmacopoeia) according to the legal system of measurement requirements, the past concentration unit “equivalent and its symbol N, the concentration of molecules and its symbol M ” abolished, replaced by the mole / liter said. Because the equivalent concentration and molar concentration are not necessarily equal and the long-term use of the old unit system habits, combined with the titration per ml of a titration solution (Xmol / L) is equivalent to how many grams of test object, therefore, to bring the drug analysis and calculation It’s